Remove one failed approach

Author: dtinth

.github/workflows/dockerimage.yml

@@ -66,12 +66,3 @@ jobs:
       - run: docker pull docker.pkg.github.com/$GITHUB_REPOSITORY/build-cache-no-buildkit || true
       - run: docker build . -t thing --cache-from=docker.pkg.github.com/$GITHUB_REPOSITORY/build-cache-no-buildkit
       - run: docker tag thing docker.pkg.github.com/$GITHUB_REPOSITORY/build-cache-no-buildkit && docker push docker.pkg.github.com/$GITHUB_REPOSITORY/build-cache-no-buildkit || true
-  build_with_gpr_buildkit:
-    env:
-      DOCKER_BUILDKIT: '1'
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v2
-      - run: echo ${{ secrets.GITHUB_TOKEN }} | docker login docker.pkg.github.com -u $GITHUB_ACTOR --password-stdin
-      - run: docker build . -t thing --cache-from=docker.pkg.github.com/$GITHUB_REPOSITORY/build-cache-with-buildkit --build-arg BUILDKIT_INLINE_CACHE=1
-      - run: docker tag thing docker.pkg.github.com/$GITHUB_REPOSITORY/build-cache-with-buildkit && docker push docker.pkg.github.com/$GITHUB_REPOSITORY/build-cache-with-buildkit || true